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Introduction In this tutorial you will learn how to communicate and send data with Bluetooth using Bluetooth HC05 Module and arduino board. What You Will Learn General information about Bluetooth protocol How to send data using Bluetooth How to send AT-Command to HC05 A Brief Introduction to Bluetooth Communication and Protocol There are several ways  for...

SRF05 Ultrasonic Module Features SRF05 is an ultrasonic transmitter and receiver module used to measure distance. The sensor operation is very simple. You only need to measure the return time of ultrasonic waves in order to measure the distance. Then you should divide measured time by 2 and multiply by the sound speed. The sensor measuring range is about 2 to 400 cm. You can download the datasheet of this module here. [wpdm_package id='17336'] SRF05 Ultrasonic Module Pinout This sensor has 3 pi...

RCWL-0516 Microwave Radar Sensor Features The RCWL-0516 microwave radar motion detection sensor is used to detect motion at a maximum distance of 9 meters. The viewing angle of this module is about 270 degrees and it has a digital output. You can install a photocell sensor on this module. Note The RCWL-0516 module does not work properly at a distance less than 20 cm. Note This module can measure a maximum distance of 7 meters by default; but you can adjust distance by placing a resistor behind the board. No...

R305 Optical Fingerprint Features R305 biometric fingerprint module is a high-precision, high-performance matching algorithm and high-capacity flash chip. It works based on fingerprint image processing, matching, memory search and performing and desired functions. R305 uses serial communication in order to communicate with microcontroller. The default Baud Rate is 57600, and it is not possible to change it. This module can store up to 980 fingerprints. It features a USB cable so you can...